s/NULL/NUL/

src/lib/libc/string/strmode.3

@@ -1,4 +1,4 @@
-.\" $OpenBSD: strmode.3,v 1.4 1997/08/20 03:52:44 millert Exp $
+.\" $OpenBSD: strmode.3,v 1.5 1998/05/04 02:00:05 deraadt Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -54,7 +54,7 @@ converts a file
 into a symbolic string which is stored in the location referenced by
 .Fa bp .
 This stored string is eleven characters in length plus a trailing
-.Dv NULL .
+.Dv NUL .
 .Pp
 The first character is the inode type, and will be one of the following:
 .Pp